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| Thread ID: 122531 | 2011-12-28 04:09:00 | Spraying Clearcoat | hueybot3000 (3646) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 1250944 | 2011-12-28 09:13:00 | ps thread here (forums.justcommodores.com.au) if your interested | hueybot3000 (3646) | ||
| 1250945 | 2011-12-28 09:58:00 | Just a suggestion (done this a few times) Get hold of a piece of metal,( or several if you can) say around 600mm ( 2ft) square or there abouts. Paint it up exactly like the car currently is, same colour etc. Then try different methods of putting on the clear coat. What you will find is sooner or later you will hit the right paint consistency, time of day and your own personal style of doing it. The reason for trying on test pieces is simple - its a lot easier to scrape it off both sides of the tests and start again on small pieces, than to make the actual car worse, and end up having to start again.Being test pieces you can also get them in different positions, meaning painting the roof of the car will be slightly different to doing the sides. Old saying practice makes perfect :) |
wainuitech (129) | ||
| 1250946 | 2011-12-28 10:04:00 | I have an old bonnet which I have been using for the purpose. I admit I get a lil impatient though lol I think you should come for a holiday to chch :thumbs: | hueybot3000 (3646) | ||
| 1250947 | 2011-12-28 19:22:00 | Done both two pot and Dulon / Duco / Ameron which are all automotive clear coats ... you don't actually say what you're spraying. First impressions would be that you have either picked up a tin of 30% satin, you've sprayed it too thick, or my best bet is that it was to hot and drying to quickly ... almost going on as a powder. There is a "retarder" available for most of the clear coats and it also depends on what thinners you are using .. some dry fast, others slower. If the old bonnet came up the same ... try spraying it with thinners only (reasonably heavy coat) and see if it makes a difference. As to humidity ... if there's too much moisture in the air, the clear will "blush" ... goes milky white because moisture is drawn into the spray or settles on the wet coat. More info on the brand of clear coat (preferably a label) and thinners you're using would be helpful to know. |
SP8's (9836) | ||
| 1250948 | 2011-12-29 01:00:00 | Ill have a look later, I picked up all the paint at the same time after talkin to the guys at rjp. Pretty sure its dulon im using but will have to double check as its been a while. The colour was mixed for me and the clear is definitely not satin, unless the guys at the shop stuffed up? Id say i sprayed to hot and dry. What do you mean spray the bonnet with thinners only? |
hueybot3000 (3646) | ||
| 1250949 | 2011-12-29 01:13:00 | If it's come up dull like the photos ... and the cause of it has been too hot / dry ... the thinners will "melt" the top layer of clear and it should become shiny ... basically it dissolves the dry spray and melts it together. The other way of doing it is to get a cotton rag ... something like an old bed sheet without any "fluff" on it ... soak it in thinners and "wipe" a section of the bonnet / car ... again, if it comes up shiny, the clear has been sprayed on "dry" ... wipe once only otherwise it will turn to custard ... What sort of temperature were you spraying in, and was there a breeze ?? Spray booths are usually temperature controlled around 22 deg C ... if you're trying to spray in 30c with a breeze, it makes it bloody difficult ... sometimes you have to be patient and wait for the right conditions. |
SP8's (9836) | ||
| 1250950 | 2011-12-29 01:17:00 | I will try that method with a rag. Sounds like a good way to diagnose. It's hard to say what kinda conditions it was sprayed in cos it was last xmas but I was screaming through the beers so Im gonna say it was hot. So if the clear on there is to dry would another coat in the right conditions sort it out or would i need to rub thinners over the car first? |
hueybot3000 (3646) | ||
| 1250951 | 2011-12-29 01:27:00 | You should be able to spray thinners only first and see what difference it makes ... but it has to go on "wet" ... one of the things you learn from experience is the volume of paint / clear + distance from surface + speed of application i.e. how fast you make a pass with the gun. IF it changes to a shiny surface, try a 40/60 mix clear/thinners and maybe go down to the shop you bought it from and ask if they have any retarder or slower evaporating thinners. Usual mix for me is around 50/50 and adjust it to the conditions. In an outdoor setting ... it's 10 times more difficult than in a spray booth. |
SP8's (9836) | ||
| 1250952 | 2011-12-29 01:34:00 | Ahk that sounds easy enough. Would I have any problems with runs cuttin into the paint? I can imagine sprayin just thinners would run pretty easily? Id love to spray in a booth but that's not an option unfortunately |
hueybot3000 (3646) | ||
| 1250953 | 2011-12-29 02:25:00 | Not too heavy ... just enough to make the top coat wet ... runs you can sandpaper out with a block, but you shouldn't have it going on THAT heavy. Geeze ... change your holiday palns and come to to the dry south ... I'll show you how to do it for a slab of SP*'s .... :D |
SP8's (9836) | ||
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